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Non-Revenue Water · Water Loss Control · IWA / AWWA Methodology · Analytics-Led
◇ Services

Analytics, audits, and the work in between.

Three workstreams that turn the methodology into measurable wins — the analytics layer, the AWWA audit, and the operational pillars that hold a programme together.

Where we focus — analytics

Turning your meters, SCADA, and GIS into loss intelligence

The water balance tells you how much you're losing. Analytics tells you where, when, and what to do first. We work with the data you already own — production meters, district inflows, smart meters, pressure loggers, work orders, and the hydraulic model.

DMA

District metering & night flow

Segment the network into District Metered Areas and analyze night-time inflow — when legitimate demand is lowest — to quantify and localize leakage zone by zone.

AMI

Smart-meter analytics

Mine AMI/AMR interval data to flag meter under-registration, profile demand, and detect anomalies that signal apparent loss and unauthorized use.

ML

Burst & failure prediction

Combine break history, pipe attributes, pressure, and environment to score mains by failure risk — shifting repairs from reactive to planned.

P

Pressure-management analytics

Use FAVAD / N1 leakage-pressure relationships to model how PRV zoning and modulation cut leak flow rates and new break frequency.

Acoustic & sensor fusion

Integrate acoustic loggers, correlators, and satellite leak-detection passes into a single ranked survey plan — not a blind network-wide walk.

Audit data validation

Raise your AWWA data-validity score by tracing each input to source, reconciling SCADA against billing, and documenting the grading.

Capabilities in depth

+District metered areas & minimum night flowLocalize leakage
By isolating zones with metered inflow and analyzing the minimum night flow (typically 2–4 a.m., when legitimate use bottoms out), the residual flow reveals background leakage. Step-testing and bottom-up analysis then narrow it to streets and assets — turning a system-wide percentage into a dispatch list.
+Pressure management & the FAVAD principleCut flow & bursts
Leakage flow rises with pressure (the FAVAD / N1 relationship), and so does the frequency of new breaks. Modulated pressure-reducing valves and well-designed pressure zones can therefore deliver immediate, low-capital savings while extending asset life — we model the trade-off against levels of service before recommending setpoints.
+Apparent-loss & revenue-protection analyticsRecover revenue
Meter accuracy testing, consumption-profile anomaly detection, and reconciliation between metered reads and the billing system surface under-registration, mis-sized meters, and unauthorized use. Because this water is valued at the retail tariff, recovery here often carries the strongest near-term return.
+Live network digital twinTest before you dispatch
Pairing a calibrated hydraulic model with real-time DMA and pressure data lets leakage hot-spots, model error, and intervention scenarios be tested before a crew is sent — closing the loop between measurement and action, and keeping the model honest over time.
Real-loss management

The four levers of leakage — and the floor beneath them

The IWA Water Loss Specialist Group frames real-loss control around four complementary methods. Analytics decides the right mix for your network and the economic point at which to stop.

01

Pressure management

Lower excess pressure to cut leak flow rates and reduce new bursts — often the highest-return first move.

02

Active leakage control

Proactively find hidden leaks via DMA monitoring and night-flow analysis instead of waiting for them to surface.

03

Speed & quality of repairs

Shorten the awareness, location, and repair time of every leak — run-time drives total loss.

04

Asset renewal

Targeted rehabilitation and mains replacement, prioritized by failure-risk analytics.

All four operate against the Unavoidable Annual Real Losses (the technical minimum), bounded by the economic level of leakage.
AWWA M36 in practice

A validated water audit — the credible starting point

A program built on weak data wastes capital. We follow the AWWA M36 methodology and the Free Water Audit Software, grade every input for reliability, and pursue validation — the standard a growing number of states (California among them) now require.

Top-down audit

Assemble system input, authorized consumption, and losses from existing records for a defensible first water balance.

Grade the data

Score each input 1–10 for reliability to produce the overall Data Validity Score, and target what most limits confidence.

Validate

Independent review against AWWA practice — the basis for regulatory reporting and for trusting the numbers enough to invest.

Component analysis & economics

Break real losses into background, reported, and unreported leakage; value apparent losses at tariff; build the case per intervention.

Intervene & monitor

Execute the prioritized mix, then re-audit to confirm savings and reset targets.

Data Validity Score

The AWWA audit grades overall confidence 0–100. Below ~70, the priority is better data before major capital. This example sits at 76.

050 · floor7090100
AWWA M36Free Water Audit Software v6.0Water Audit CompilerState validated audits

Ready to put numbers to it?

The calculator will give you a quick estimate; a validated audit replaces the estimate with your real values.

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